Our Lady's College and Ardscoil Ris will have to do it all over again next Sunday after midfielder Colin O'Riordan snatched an injury-time equaliser for the Templemore side in Nenagh.
Having led for long stages of this encounter, it looked like Templemore would fall short as Ardscoil Ris' second-half fightback saw the Limerick school edge their way in front twice in the closing minutes.
However on both occasions, man of the match O'Riordan popped up with the equaliser to bring his tally to five points, all of which came from play.
The Tipperary school took a 0-9 to 0-4 half-time lead, having played with the wind at their backs in the opening half.
Favourites Ardscoil Ris relied on the free-taking of Cian O'Brien and Ronan Lynch to keep in touch with Templemore, with Colin Crehan also adding to their points tally in the first half.
Despite facing into the elements, Templemore remained in control until midway through the second half, when David Dempsey raced on to a perceptive Crehan pass to fire to the net.
Two O'Brien frees, along with a point from Lynch, edged the 2010 and 2011 champions in front before O'Riordan popped up with the goods to rescue Templemore at the death.
SCORERS – Our Lady's College: J McGrath 0-7 (5f), C O'Riordan 0-5, D Carey, B Kennedy 0-1 each. Ardscoil Ris: C O'Brien 0-6 (6f), D Dempsey 1-0, R Lynch 0-3 (1f, 1s-l), C Crehan, M O'Loughlin 0-1 each.
Our Lady's College, Templemore – SP Guerins; J Bergin, J Ryan, D Brereton; P Hogan, J Nyland, M Campion; C O'Riordan, J McGrath; T Nolan, D Carey, B Kennedy, D McEnroe, T Maher, JJ Ryan. Subs: B O'Connell for JJ Ryan (25); J Bergin for McEnroe (h-t); T Brett for Maher (37); J Fogarty for Carey (56).
Ardscoil Ris – C Houlihan; B Fitzpatrick, M Buckley, J O'Halloran; M Casey, R Lynch, A Carroll; M Foley, W O'Donoghue; C O'Brien, C Lynch, D Dempsey; C Crehan, E Keogh, M O'Loughlin. Subs: E Costelloe for Casey (37); K Daly for O'Loughlin (53).
REF – G O'Connell (Cork)